1-Point Calibration - ABB Aztec ATS430 Operating Instructions Manual

6.3.2 1-Point calibration

For the 1-point calibration only a span value is used. The span
value can be provided by a verification puck, a formazin solution
or an AMCO standard.
1. At the Calibrate level, press the
prompt):
Menu
Calibrate
Exit
The sensor selector menu is displayed:
Calibrate
S1:Turbidity TSS
Hold Outputs
Back
Highlight the sensor to be calibrated (for example
S1:Turbidity TSS) and press the
prompt).
2. The menu options for S1:Turbidity TSS are displayed:
S1:Turb TSS
Sensor Verification
Turbidity Cal
TSS Cal
Restore Defaults
Back
3. Use the / keys to select Turbidity Cal and press
the key (below the Select prompt).
The Turbidity Cal screen is displayed:
Turbidity Cal
Calibration Type
1-Point Cal
Next
key (below the Select
Select
Select
key (below the Select
Select
Edit
4. Press the key (below the Edit prompt).
The Calibration Type screen is displayed:
Calibration Type
1-Point Cal
2-Point Cal
Cancel
5. Use the / keys to select 1-Point Cal and press the
key (below the OK prompt).
Press the key (below the Next prompt).
The Turbidity / Offset screen is displayed:
Turbidity
Offset
Remove Offset
Next
For most cases a zero offset is suitable. However, in
situations where an offset was previously determined
during a 2-point calibration, it is possible to retain the
previously measured offset during the 1-point calibration.
6. To select the required offset press the
Edit prompt).
The Offset / Remove Offset | Retain Offset screen is
displayed:
Offset
Remove Offset
Retain Offset
Cancel
7. Use the / keys to select Retain Offset and press
the key (below the OK prompt) to confirm the selection
and use the existing offset, or select Remove Offset to
remove the offset (an offset of 0 NTU is assumed).
Aztec ATS430 | Turbidity sensor | OI/ATS430–EN Rev. H 15
OK
Edit
key (below the
OK